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GB/T 42387-2023: Volumetric glass - Technical requirements for quality classification Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 42387-2023: Volumetric glass - Technical requirements for quality classification---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT42387-2023GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 81.040.01 CCS N 64 Volumetric Glass - Technical Requirements for Quality Classification ISSUED ON: MARCH 17, 2023 IMPLEMENTED ON: OCTOBER 1, 2023 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative References ... 4 3 Terms and Definitions ... 5 4 Technical Requirements ... 5 5 Test Methods ... 13 Volumetric Glass - Technical Requirements for Quality Classification1 ScopeThis document specifies the technical requirements for quality classification of volumetric glass and describes the test methods. This document is applicable to the quality classification and test of volumetric glass (burettes, graduated pipettes, one-mark pipettes, one-mark volumetric flasks, measuring cylinders and measuring cups).2 Normative ReferencesThe contents of the following documents constitute indispensable clauses of this document through the normative references in this text. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 6580 Glass - Resistance to Attack by a Boiling Aqueous Solution of Mixed Alkali - Method of Test and Classification GB/T 6581 Glass - Resistance to Attack by Hydrochloric Acid at 100 C - Flame Emission or Flame Atomic Absorption Spectrometric Method GB/T 6582 Glass - Hydrolytic Resistance of Glass Grains at 98 C - Method of Test and Classification GB/T 12803 Laboratory Glassware - Conical Graduated GB/T 12804 Laboratory Glassware - Graduated Measuring Cylinders GB/T 12805 Laboratory Glassware - Burettes GB/T 12806 Laboratory Glassware - One-mark Volumetric Flasks GB/T 12807 Laboratory Glassware - Graduated Pipettes GB/T 12808 Laboratory Glassware - One-mark Pipettes GB/T 15726 Glassware - Stress Examination Methods GB/T 15728 Glass Resistance to Attack by a Boiling Hydrochloric Acid Gravimetric Method of Test and Classification GB/T 28209 Methods for Chemical Analysis of Borosilicate Glasses JJG 196 Verification Regulation of Working Glass Container3 Terms and DefinitionsThe following terms and definitions are applicable to this document. 3.1 quality classification Quality classification refers to classification in accordance with the quality and technical requirements of volumetric glass under test. NOTE 1: volumetric glass includes burettes, graduated pipettes, one-mark pipettes, one-mark volumetric flasks, measuring cylinders and measuring cups. NOTE 2: the quality and technical requirements include structure type, specifications and dimensions, capacity and accuracy, appearance requirements, physical and chemical properties, etc. 3.2 marking numbers Marking numbers are marked on the outer surface of the volumetric glass to indicate the metrological figure of the volumetric glass.4 Technical Requirements4.1 Burettes The quality classification requirements for burettes shall comply with the stipulations of Table 1. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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